clang: Fix several -Woverloaded-virtual warnings.

build/common.gypi

 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 1195 matching lines @@
               ['_toolset=="target"', {
                 'cflags': [
                   # Clang spots more unused functions.
                   '-Wno-unused-function',
                   # Don't die on dtoa code that uses a char as an array index.
                   '-Wno-char-subscripts',
                   # Survive EXPECT_EQ(unnamed_enum, unsigned int) -- see
                   # http://code.google.com/p/googletest/source/detail?r=446 .
                   # TODO(thakis): Use -isystem instead (http://crbug.com/58751 )
                   '-Wno-unnamed-type-template-args',
-                  # TODO(thakis): Turn on -- http://crbug.com/72205
-                  '-Wno-overloaded-virtual',
                 ],
                 'cflags!': [
                   # Clang doesn't seem to know know this flag.
                   '-mfpmath=sse',
                 ],
               }]],
           }],
           ['clang==1 and clang_use_chrome_plugins==1', {
             'target_conditions': [
               ['_toolset=="target"', {
@@ skipping 114 matching lines @@
               'WARNING_CFLAGS': [
                 # Don't die on dtoa code that uses a char as an array index.
                 # This is required solely for base/third_party/dmg_fp/dtoa.cc.
                 '-Wno-char-subscripts',
                 # Clang spots more unused functions.
                 '-Wno-unused-function',
                 # Survive EXPECT_EQ(unnamed_enum, unsigned int) -- see
                 # http://code.google.com/p/googletest/source/detail?r=446 .
                 # TODO(thakis): Use -isystem instead (http://crbug.com/58751 ).
                 '-Wno-unnamed-type-template-args',
-                # TODO(thakis): Turn on -- http://crbug.com/72205
-                '-Wno-overloaded-virtual',
               ],
             }],
             ['clang==1 and clang_use_chrome_plugins==1', {
               'OTHER_CFLAGS': [
                 '<(clang_chrome_plugins_flags)',
               ],
             }],
             ['clang==1 and clang_load!="" and clang_add_plugin!=""', {
               'OTHER_CFLAGS': [
                 '-Xclang', '-load', '-Xclang', '<(clang_load)',
@@ skipping 242 matching lines @@
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }
 
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